Improvement in ore-pulverizers



W. BRCKNER.

` VORE PULVERIZEIL No.178.266. Patented Ju'ne, 1876.

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UNITED STATES PATENT EEIGE,

WILLIAM BROKNER, OF ROSSLAU,"" GERMANY, ASSIGNOR OF ONE-HALF HIS RIGHT TO GOT'IFRIED SAOHSENBERG, OF SAME PLACE.

IMPROVEMENT lN ORE-PULVERIZERS'.

Specification forming part of Letters Patent No. l 78,266, dated June 6, 1876; application tiled Y March 4, 1876. a

which thel pulverized substances are discharged out ot' the apparatus in such a manner that these substances, after having been charged at the opening i, Vand after being ground by the action ot' the balls b b, and after passing the slots or openings a a, and after being sit'ted by the sieve S, are conveyed toward the `opening o, said opening being located at or near the axis of revolution mw; second, in connectingl these conveyers g g with the stationary outlet B, through which outlet the pulverized substances are finally discharged Without loss ot dust.

i By this arrangement the expense of alarge casing surrounding the Whole apparatus is dispensed with 5 and, besides, there is the advantage that the pivots z and z, on Which the drum A is made to revolve, are protected against thedestroying action of the dust, and that the apparatus is made of easy access and its operation can be controlled better than when the Whole apparatus is inclosed by a' casing.

After having thus described the nature of my invention, I Will now proceed to 'describe its construction and operation, in order to enable those skilled in the art to make and use the same.

'I make my apparatus of iron or other suitable material, and those parts which are liable to be Worn by the action ot' the balls are protected by plates, ribs, and rails of steel and iron, fastened inV such a manner to the inside of the drum that they may easily be replaced When worn out. Especially the slots or openings a, ct are to' be `protected by the ribs It h against the action of the balls.

The shape of the revolving drum may be either cylindrical With cone-shaped heads or cylindrical with dat heads, or any other shape of vessel may be used for providing it with the above-mentioned conveyers or passages g g and outlet B.

The passages or conveyers f f are made for the purpose of returning into the drum those parts ot the substances to be treated which are too coarse to pass the sieve S.

The apparatus is made to 'revolve either by means of a pulley, or by gearing or otherwise,

at a speed of about twenty revolutions per minute. l

The operation of my apparatus is as follows: The substances to be treated, after having been reduced to about the size of a hickory-nut by a Blakes crusher or other suitable apparatus are continuously fed into the drum A by the inlet fr, which is tightly connected With the openingfi by means of a ring of felt or otherwise.

rlhe feeding must be done regularly, and in4 proportion to the grinding action of the balls, and no more must be charged into the drum than can readily be discharged through the openings a a, the sieve S, and the conveyers g g. This is easily learned by alittle practice with the different substances.

The.` outlet B is also tightly fitted to the opening o by means of a ring of felt, so that no dust is lost, but all the pnlverized substances may be saved `by letting them directly from the outlet B into a bag, a car, ora box,

as the case may be. y

In some cases, whenever sifting is notrequired, the `sieve S and conveyers ff may be dispensed with.

I claim as my invention- 1. A revolving vessel, provided with conveyers g g, for conducting the substances t0 be treated toward the opening o and the outlet B, said opening and outlet being constructed at or near the revolving axis xm, substantially in the manner and for the purpose described.

2. rIhe combination, with the drum or vessel A, provided with the sieve S, of the conveyers ff and g g, and the discharge-opening o and the outlet B, substantially inthe manner and for the purpose described.

`In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM BBUCKNER.

Witnesses:

BERTEOLD ROI, HERMANN KnErsMANN. 

